User's Manual

S3C2450X RISC MICROPROCESSOR HSMMC CONTROLLER
21-17
5 SDI SPECIAL REGISTERS
5.1 CONFIGURATION REGISTER TYPES
Configuration register fields are assigned one of the attributes described below :
Register
Attribute
Description
RO Read-only register: Register bits are read-only and cannot be altered by software or any
reset operation. Writes to these bits are ignored.
ROC Read-only status : These bits are initialized to zero at reset. Writes to these bits are
ignored.
RW or R/W Read-write register : Register bits are read-write and may be either set or cleared by
software to the desired state.
RW1C Read-only status, Write-1-to-clear status: Register bits indicate status when read, a set bit
indicating a status event may be cleared by writing a 1. Writing a 0 to RW1C bits has no
effect.
RWAC Read-Write, automatic clear register: The Host Driver requests a Host Controller operation
by setting the bit. The Host Controllers shall clear the bit automatically when the operation
of complete. Writing a 0 to RWAC bits has no effect.
HWInit Hardware Initialized: Register bits are initialized by firmware or hardware mechanisms
such as pin strapping or serial EEPROM. Bits are read-only after initialization, and writes to
these bits are ignored.
Rsvd or Reserved Reserved. These bits are initialized to zero, and writes to them are ignored.
Address
HSMMC0_BASE 0x4AC0_0000
HSMMC1_BASE 0x4A80_0000